Statistics – Applications
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.529e..71r&link_type=abstract
Proceedings of the Workshop on POLinSAR - Applications of SAR Polarimetry and Polarimetric Interferometry (ESA SP-529). 14-16 Ja
Statistics
Applications
Scientific paper
Objective of this study is to systematically analyse and interpret the influence of interception on the backscattering behaviour from crops. The investigations were carried out using airborne E-SAR data at L-band recorded in June 2000. Two different decomposition theorems the eigenvector- and model based decomposition were applied to the SAR data. The polarimetric parameters derived by the eigenvector decomposition theorems showed no remarkable changes due to wetting of the plant surfaces. Only for the β-information significant variations were obtained. These changes are highly correlated to the variations of the radar backscatter at HV polarization, indicating an increase in volume scattering processes under wet conditions. This is in agreement with the results obtained by the model based decomposition theorem. Furthermore, the second approach signifies a decline in surface scattering and double bounce interactions when water on the plant surfaces is present. The greatest changes in backscattering due to moisture were found for high grassland, barley and rye.
Riedel Thomas
Schmullius Christiane
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